… | |
… | |
482 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
482 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
483 | /* ECB.H BEGIN */ |
483 | /* ECB.H BEGIN */ |
484 | /* |
484 | /* |
485 | * libecb - http://software.schmorp.de/pkg/libecb |
485 | * libecb - http://software.schmorp.de/pkg/libecb |
486 | * |
486 | * |
487 | * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de> |
487 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
488 | * Copyright (©) 2011 Emanuele Giaquinta |
488 | * Copyright (©) 2011 Emanuele Giaquinta |
489 | * All rights reserved. |
489 | * All rights reserved. |
490 | * |
490 | * |
491 | * Redistribution and use in source and binary forms, with or without modifica- |
491 | * Redistribution and use in source and binary forms, with or without modifica- |
492 | * tion, are permitted provided that the following conditions are met: |
492 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
570 | #else |
570 | #else |
571 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
571 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
572 | #endif |
572 | #endif |
573 | #endif |
573 | #endif |
574 | |
574 | |
575 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
|
|
576 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
577 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
|
|
578 | #define ECB_CPP (__cplusplus+0) |
575 | #define ECB_CPP (__cplusplus+0) |
579 | #define ECB_CPP11 (__cplusplus >= 201103L) |
576 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
577 | |
|
|
578 | #if ECB_CPP |
|
|
579 | #define ECB_C 0 |
|
|
580 | #define ECB_STDC_VERSION 0 |
|
|
581 | #else |
|
|
582 | #define ECB_C 1 |
|
|
583 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
587 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
580 | |
588 | |
581 | #if ECB_CPP |
589 | #if ECB_CPP |
582 | #define ECB_EXTERN_C extern "C" |
590 | #define ECB_EXTERN_C extern "C" |
583 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
591 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
584 | #define ECB_EXTERN_C_END } |
592 | #define ECB_EXTERN_C_END } |
… | |
… | |
617 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
625 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
618 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
626 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
619 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
627 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
620 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
628 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
621 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
629 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
630 | #elif __aarch64__ |
|
|
631 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
622 | #elif (__sparc || __sparc__) && !__sparcv8 |
632 | #elif (__sparc || __sparc__) && !__sparcv8 |
623 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
633 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
624 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
634 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
625 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
635 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
626 | #elif defined __s390__ || defined __s390x__ |
636 | #elif defined __s390__ || defined __s390x__ |
… | |
… | |
648 | |
658 | |
649 | #ifndef ECB_MEMORY_FENCE |
659 | #ifndef ECB_MEMORY_FENCE |
650 | #if ECB_GCC_VERSION(4,7) |
660 | #if ECB_GCC_VERSION(4,7) |
651 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
661 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
652 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
662 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
663 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
664 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
653 | |
665 | |
654 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
666 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
655 | * without risking compile time errors with other compilers. We *could* |
667 | * without risking compile time errors with other compilers. We *could* |
656 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
668 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
657 | * around this shit time and again. |
669 | * around this shit time and again. |
658 | * #elif defined __clang && __has_feature (cxx_atomic) |
670 | * #elif defined __clang && __has_feature (cxx_atomic) |
659 | * // see comment below (stdatomic.h) about the C11 memory model. |
671 | * // see comment below (stdatomic.h) about the C11 memory model. |
660 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
672 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
673 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
674 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
661 | */ |
675 | */ |
662 | |
676 | |
663 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
677 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
664 | #define ECB_MEMORY_FENCE __sync_synchronize () |
678 | #define ECB_MEMORY_FENCE __sync_synchronize () |
665 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
679 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
… | |
… | |
695 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
709 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
696 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
710 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
697 | /* for most usages, or gcc and clang have a bug */ |
711 | /* for most usages, or gcc and clang have a bug */ |
698 | /* I *currently* lean towards the latter, and inefficiently implement */ |
712 | /* I *currently* lean towards the latter, and inefficiently implement */ |
699 | /* all three of ecb's fences as a seq_cst fence */ |
713 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
714 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
715 | /* for all __atomic_thread_fence's except seq_cst */ |
700 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
716 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
701 | #endif |
717 | #endif |
702 | #endif |
718 | #endif |
703 | |
719 | |
704 | #ifndef ECB_MEMORY_FENCE |
720 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
761 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
777 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
762 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
778 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
763 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
779 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
764 | #else |
780 | #else |
765 | #define ecb_attribute(attrlist) |
781 | #define ecb_attribute(attrlist) |
|
|
782 | |
|
|
783 | /* possible C11 impl for integral types |
|
|
784 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
785 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
786 | |
766 | #define ecb_is_constant(expr) 0 |
787 | #define ecb_is_constant(expr) 0 |
767 | #define ecb_expect(expr,value) (expr) |
788 | #define ecb_expect(expr,value) (expr) |
768 | #define ecb_prefetch(addr,rw,locality) |
789 | #define ecb_prefetch(addr,rw,locality) |
769 | #endif |
790 | #endif |
770 | |
791 | |
… | |
… | |
1065 | || defined __hppa__ \ |
1086 | || defined __hppa__ \ |
1066 | || defined __ia64__ \ |
1087 | || defined __ia64__ \ |
1067 | || defined __m68k__ \ |
1088 | || defined __m68k__ \ |
1068 | || defined __m88k__ \ |
1089 | || defined __m88k__ \ |
1069 | || defined __sh__ \ |
1090 | || defined __sh__ \ |
1070 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
1091 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1092 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) |
1071 | #define ECB_STDFP 1 |
1093 | #define ECB_STDFP 1 |
1072 | #include <string.h> /* for memcpy */ |
1094 | #include <string.h> /* for memcpy */ |
1073 | #else |
1095 | #else |
1074 | #define ECB_STDFP 0 |
1096 | #define ECB_STDFP 0 |
1075 | #endif |
1097 | #endif |